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3.
J Clin Microbiol ; 44(2): 595-7, 2006 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-16455920

RESUMEN

The emergence of a clinically daptomycin-resistant Staphylococcus aureus isolate occurred during treatment of methicillin-resistant S. aureus bacteremia and probable vertebral osteomyelitis. The breakthrough isolate was indistinguishable from pretreatment daptomycin-susceptible isolates by pulsed-field gel electrophoresis. Daptomycin nonsusceptibility was confirmed by MIC and time-kill curve analyses.


Asunto(s)
Antibacterianos/farmacología , Bacteriemia/tratamiento farmacológico , Daptomicina/farmacología , Farmacorresistencia Bacteriana , Resistencia a la Meticilina , Osteomielitis/tratamiento farmacológico , Staphylococcus aureus/efectos de los fármacos , Antibacterianos/uso terapéutico , Bacteriemia/microbiología , Daptomicina/uso terapéutico , Electroforesis en Gel de Campo Pulsado , Humanos , Masculino , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Osteomielitis/microbiología , Infecciones Estafilocócicas/tratamiento farmacológico , Infecciones Estafilocócicas/microbiología , Staphylococcus aureus/clasificación , Staphylococcus aureus/genética , Staphylococcus aureus/aislamiento & purificación
4.
J Infect Dis ; 192(7): 1249-59, 2005 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-16136469

RESUMEN

BACKGROUND: In clinical trials, canarypox ALVAC-human immunodeficiency virus (HIV) vaccines have been shown to elicit human HIV-specific cytotoxic T lymphocyte (CTL) responses in some but not all healthy uninfected adults.Methods. A clinical trial was conducted to examine whether the vaccine vCP1452 would elicit a greater HIV-specific CTL response when given at a dose of 10(8.0) TCID50 (60 participants) than when given at the regular dose, 10(7.26) TCID50 (40 participants); as a control, a placebo vaccine preparation also was administered (10 participants). RESULTS: Two weeks after the last vaccination in a series, HIV-specific CTL responses were not significantly different when measured by either chromium-release assay (8% and 16% in the high- and regular-dose recipients, respectively) or interferon- gamma ELISpot assay (8% and 15% in the high- and regular-dose recipients, respectively); moreover, recipients of the higher dose had greater local and systemic reactions (P<.001). CONCLUSIONS: High reactogenicity associated with an increased dose of vCP1452 negates the need for further evaluation of this strategy to boost the frequency of HIV-specific CTL response in seronegative human subjects. Development of highly immunogenic canarypox vectors requires further work to optimize vector and insert design, as well as novel ways to increase dosage and to reduce reactogenicity.


Asunto(s)
Vacunas contra el SIDA/administración & dosificación , Seronegatividad para VIH/inmunología , Proteínas Recombinantes/inmunología , Linfocitos T Citotóxicos/inmunología , Vacunas Sintéticas/administración & dosificación , Proteínas Virales/metabolismo , Vacunas contra el SIDA/genética , Vacunas contra el SIDA/inmunología , Método Doble Ciego , Femenino , Anticuerpos Anti-VIH/sangre , VIH-1/inmunología , Humanos , Interferón gamma/metabolismo , Masculino , Proteínas Recombinantes/metabolismo , Resultado del Tratamiento , Vacunación , Vacunas Sintéticas/inmunología , Proteínas Virales/genética , Proteínas Virales/inmunología
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